论文信息 - A note on size effect in actuating NiTi shape memory alloys by electrical current

A note on size effect in actuating NiTi shape memory alloys by electrical current

The size effect in triggering the actuation of NiTi shape memory alloys directly by electrical current is investigated. Wire/rod is taken as an example in this study to show the relationship between the diameter of shape memory alloy wire/rod and the required current/power for actuation, and in the case of cyclic operation, achievable frequency. Through a few case studies, it is revealed that by presenting on logarithmic scale, the major operating characteristics can be quickly estimated as linear functions of wire/rod diameter.

[1] Wenyi Huang,et al. Pile-up and sink-in in micro-indentation of a NiTi shape-memory alloy , 2005 .

[2] W. Huang. On the selection of shape memory alloys for actuators , 2002 .

[3] Wei Min Huang,et al. Modified Shape Memory Alloy (SMA) Model for SMA Wire Based Actuator Design , 1999 .

[4] Yong Qing Fu,et al. Characterization of TiNi shape-memory alloy thin films for MEMS applications , 2001 .

[5] H. Du,et al. On the lower thickness boundary of sputtered TiNi films for shape memory application , 2006 .

[6] Yong Qing Fu,et al. TiNi-based thin films in MEMS applications: a review , 2004 .

[7] X.Y. Gao,et al. Shape Memory Motor Directly Powered by Solar Energy for Space Missions , 2006, 2006 International Conference on Mechatronics and Automation.

[8] Wei Min Huang,et al. Micro NiTi–Si cantilever with three stable positions , 2004 .

[9] W. Huang,et al. Hard Disk Drive Assembly using Copper-Based Shape-Memory Alloy , 2002 .

[10] Weiming Huang,et al. Design, testing, and simulation of NiTi shape-memory-alloy thin-film-based microgrippers , 2003 .

[11] W. Huang,et al. Indentation and two-way shape memory in a NiTi polycrystalline shape-memory alloy , 2007 .